本文選題：淡黑鈣土　切入點(diǎn)：秸稈　出處：《農(nóng)業(yè)環(huán)境科學(xué)學(xué)報》2017年05期

【摘要】：以吉林省典型土壤淡黑鈣土為研究對象,采用室內(nèi)恒溫培養(yǎng)法研究在不同秸稈和硫酸鋁添加量下,淡黑鈣土中有機(jī)礦質(zhì)復(fù)合體的含量及有機(jī)碳在其中的分布,探討有機(jī)礦質(zhì)復(fù)合體對淡黑鈣土固碳的貢獻(xiàn)。結(jié)果表明:對于秸稈和硫酸鋁添加的所有處理,復(fù)合體含量均表現(xiàn)為G_1(鈉分散組)G_0(水分散組)G_2(鈉質(zhì)研磨分散組);與對照相比,秸稈和硫酸鋁添加使得淡黑鈣土中G_0組復(fù)合體的含量降低,G_2組復(fù)合體的含量明顯上升,而對G_1組復(fù)合體的含量影響不大。單位質(zhì)量復(fù)合體中有機(jī)碳的含量大小表現(xiàn)為G_2G_0G_1,G_2組復(fù)合體中的有機(jī)碳含量最高(平均含量為95.92 g·kg~(-1)),約為單位質(zhì)量G_0組和G_1組復(fù)合體中有機(jī)碳含量的3倍,G_0組(平均含量為33.89 g·kg~(-1))略高于G_1組(平均含量為32.25 g·kg~(-1))。秸稈和硫酸鋁添加均有助于提高G_0組復(fù)合體中有機(jī)碳的含量;而G_1組復(fù)合體有機(jī)碳含量的變化主要受秸稈添加量的影響,隨著秸稈添加量的增加,G_1組復(fù)合體有機(jī)碳含量增加;秸稈對G_2組復(fù)合體中有機(jī)碳含量的提高具有促進(jìn)作用,而硫酸鋁的影響則相反。各組復(fù)合體對淡黑鈣土固碳的貢獻(xiàn)率取決于土壤中復(fù)合體的含量及單位質(zhì)量復(fù)合體中有機(jī)碳的含量,其對固碳貢獻(xiàn)的大小順序?yàn)镚_1G_0G_2;有機(jī)礦質(zhì)復(fù)合體(G_0+G_1+G_2)質(zhì)量僅占淡黑鈣土質(zhì)量的約四分之一,但其對于淡黑鈣土固碳的貢獻(xiàn)卻為61.96%~73.56%。
[Abstract]:The content of organic mineral complex and the distribution of organic carbon in typical calcareous soil of Jilin Province were studied by using the method of constant temperature culture under different amounts of straw and aluminum sulfate. The contribution of organic mineral complex to carbon sequestration of light calcareous soil was studied. The results showed that the content of organic mineral complex in all treatments added with straw and aluminum sulfate was G-1 (sodium dispersive group G0). The addition of straw and aluminum sulfate decreased the content of Gs0 complex in calcareous soil and increased the content of GS-2 complex in calcareous soil. The content of organic carbon in G2G0G1 / G-1 group is the highest (average content is 95.92 g / kg 路kg ~ (-1) ~ (-1)) in group G _ (2) G _ (0) and G _ (1) (average content is 95.92 g 路kg ~ (-1) ~ (-1)), which is about a unit mass group of G _ 0 and G _ (1) groups. The content of organic carbon in group G _ 0 (mean 33.89 g 路kg ~ (-1)) was slightly higher than that in group G1 (the average content was 32.25 g 路kg ~ (-1)). The addition of straw and aluminum sulfate could increase the content of organic carbon in group G0. The content of organic carbon in group G1 was mainly affected by the amount of straw added, and the content of organic carbon in group G1 increased with the increase of the amount of straw, and the increase of organic carbon content in group G2 was promoted by straw. The contribution rate of each group of complexes to carbon sequestration of light calcareous soil depends on the content of complex in soil and the content of organic carbon in unit mass complex. The order of its contribution to carbon sequestration is in the order of G1G0G\ + +\ +\ +\ {2\}\ #\ +\ {2\}\ #\ #\ #\ #\ {#}\ #\ #\ #\ #\ #\ # #\ {#}\ #\ #\ #\ #\ #???
【作者單位】： 吉林農(nóng)業(yè)大學(xué)資源與環(huán)境學(xué)院吉林省商品糧基地土壤資源可持續(xù)利用重點(diǎn)實(shí)驗(yàn)室;Faculty
【基金】：國家自然科學(xué)基金青年科學(xué)基金(41403077) 公益性行業(yè)科研專項(xiàng)基金(201503116)~~
【分類號】：S153.6

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